Investigations into the fish die-off and pinkish-purple colour of the Sentosa South Cove waterway earlier this month have found that they were caused by the heavy and persistent rainfall in recent weeks that altered water conditions.. Read more at straitstimes.com.
The Central District Health Department as well as the Southwest District Health and Idaho Department of Environmental Quality says recent water samples indicate there were concentrations of toxin-producing cyanobacteria in the reservoir.
Residents note significant changes in the Christiansen Lake ecosystem since 2019. This includes fewer nesting birds, fish, and mammals around the lake, while the leech population has increased along with the occurrence of algal blooms.
"Lake Erie receives a lot of attention for its problems with HABS, but Ohio’s inland lakes and waterways share the increasingly dangerous problem and its impacts on health as a source of drinking water and recreation, and the potential loss of millions of dollars in tourism and lakeside property values."
Clams collected in late August had concentrations of saxitoxin considered dangerous for human consumption. The samples were collected in August about 70 miles north of St. Lawrence Island and about 50 miles north of Cape Lisburne, much further north than previously documented.
Blooms are often associated with low dissolved oxygen events and warm ocean water temperatures and weather changes – all of which we are, or have been, experiencing," said Kiemele. Farm owner Cermaq says it has deployed fish protection countermeasures that have already caused conditions to improve.
Returning to port with tons of algae in their trammel nets, with hardly any fish, has become a common drama for the men fishing in Spain's Southern coast. The same “catastrophe” is also threatening the marine biodiversity of the area and piling up on beaches.